The present investigation aimed to determine the existence of procedural legal factors questioning in the text of the Code of Criminal Procedure to prevent the consolidation of the adversarial model in Peru. To perform this research analyzes the new Code of Criminal Procedure, Case casatorias, full jurisdictional monitoring reports of the courts which applied the new Criminal Procedure Code, the international human rights instruments, foreign law in Chile and Colombia and reports to monitor the reform process in Latin America, found that: a) The criminal procedure reform in Peru, has not been accompanied by reforms to the Constitution and the organic laws to conform to the adversarial model; b) Exist in the Criminal Procedure Code inquisitive lags rules that maintain existing culture and practices of the mixed model of inquiry, as the prevalence of literacy and the record, the use of det...